3 * Copyright (c) 1987-2002 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
21 char *nw_get_sitelib(const char *pl);
24 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
41 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
42 char *getenv (char *); /* Usually in <stdlib.h> */
45 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
53 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
59 #if defined(USE_ITHREADS)
60 # define INIT_TLS_AND_INTERP \
62 if (!PL_curinterp) { \
63 PERL_SET_INTERP(my_perl); \
66 PERL_SET_THX(my_perl); \
70 PERL_SET_THX(my_perl); \
74 # define INIT_TLS_AND_INTERP \
76 if (!PL_curinterp) { \
77 PERL_SET_INTERP(my_perl); \
79 PERL_SET_THX(my_perl); \
83 #ifdef PERL_IMPLICIT_SYS
85 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
86 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
87 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
88 struct IPerlDir* ipD, struct IPerlSock* ipS,
89 struct IPerlProc* ipP)
91 PerlInterpreter *my_perl;
92 /* New() needs interpreter, so call malloc() instead */
93 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
95 Zero(my_perl, 1, PerlInterpreter);
111 =head1 Embedding Functions
113 =for apidoc perl_alloc
115 Allocates a new Perl interpreter. See L<perlembed>.
123 PerlInterpreter *my_perl;
124 #ifdef USE_5005THREADS
128 /* New() needs interpreter, so call malloc() instead */
129 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
132 Zero(my_perl, 1, PerlInterpreter);
135 #endif /* PERL_IMPLICIT_SYS */
138 =for apidoc perl_construct
140 Initializes a new Perl interpreter. See L<perlembed>.
146 perl_construct(pTHXx)
150 PL_perl_destruct_level = 1;
152 if (PL_perl_destruct_level > 0)
156 /* Init the real globals (and main thread)? */
159 MUTEX_INIT(&PL_dollarzero_mutex); /* for $0 modifying */
161 #ifdef PERL_FLEXIBLE_EXCEPTIONS
162 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
165 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
167 PL_linestr = NEWSV(65,79);
168 sv_upgrade(PL_linestr,SVt_PVIV);
170 if (!SvREADONLY(&PL_sv_undef)) {
171 /* set read-only and try to insure than we wont see REFCNT==0
174 SvREADONLY_on(&PL_sv_undef);
175 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
177 sv_setpv(&PL_sv_no,PL_No);
179 SvREADONLY_on(&PL_sv_no);
180 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
182 sv_setpv(&PL_sv_yes,PL_Yes);
184 SvREADONLY_on(&PL_sv_yes);
185 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
188 PL_sighandlerp = Perl_sighandler;
189 PL_pidstatus = newHV();
192 PL_rs = newSVpvn("\n", 1);
197 PL_lex_state = LEX_NOTPARSING;
203 SET_NUMERIC_STANDARD();
207 PL_patchlevel = NEWSV(0,4);
208 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
209 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
210 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
211 s = (U8*)SvPVX(PL_patchlevel);
212 /* Build version strings using "native" characters */
213 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
214 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
215 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
217 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
218 SvPOK_on(PL_patchlevel);
219 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
220 ((NV)PERL_VERSION / (NV)1000) +
221 ((NV)PERL_SUBVERSION / (NV)1000000);
222 SvNOK_on(PL_patchlevel); /* dual valued */
223 SvUTF8_on(PL_patchlevel);
224 SvREADONLY_on(PL_patchlevel);
227 #if defined(LOCAL_PATCH_COUNT)
228 PL_localpatches = local_patches; /* For possible -v */
231 #ifdef HAVE_INTERP_INTERN
235 PerlIO_init(aTHX); /* Hook to IO system */
237 PL_fdpid = newAV(); /* for remembering popen pids by fd */
238 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
239 PL_errors = newSVpvn("",0);
240 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
241 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
242 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
244 PL_regex_padav = newAV();
245 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
246 PL_regex_pad = AvARRAY(PL_regex_padav);
248 #ifdef USE_REENTRANT_API
249 Perl_reentrant_init(aTHX);
252 /* Note that strtab is a rather special HV. Assumptions are made
253 about not iterating on it, and not adding tie magic to it.
254 It is properly deallocated in perl_destruct() */
257 HvSHAREKEYS_off(PL_strtab); /* mandatory */
258 hv_ksplit(PL_strtab, 512);
260 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
261 _dyld_lookup_and_bind
262 ("__environ", (unsigned long *) &environ_pointer, NULL);
265 #ifdef USE_ENVIRON_ARRAY
266 PL_origenviron = environ;
269 /* Use sysconf(_SC_CLK_TCK) if available, if not
270 * available or if the sysconf() fails, use the HZ. */
271 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
272 PL_clocktick = sysconf(_SC_CLK_TCK);
273 if (PL_clocktick <= 0)
281 =for apidoc nothreadhook
283 Stub that provides thread hook for perl_destruct when there are
290 Perl_nothreadhook(pTHX)
296 =for apidoc perl_destruct
298 Shuts down a Perl interpreter. See L<perlembed>.
306 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
308 #ifdef USE_5005THREADS
310 #endif /* USE_5005THREADS */
312 /* wait for all pseudo-forked children to finish */
313 PERL_WAIT_FOR_CHILDREN;
315 destruct_level = PL_perl_destruct_level;
319 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
321 if (destruct_level < i)
328 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
333 if (PL_endav && !PL_minus_c)
334 call_list(PL_scopestack_ix, PL_endav);
340 /* Need to flush since END blocks can produce output */
343 if (CALL_FPTR(PL_threadhook)(aTHX)) {
344 /* Threads hook has vetoed further cleanup */
345 return STATUS_NATIVE_EXPORT;
348 /* We must account for everything. */
350 /* Destroy the main CV and syntax tree */
352 op_free(PL_main_root);
353 PL_main_root = Nullop;
355 PL_curcop = &PL_compiling;
356 PL_main_start = Nullop;
357 SvREFCNT_dec(PL_main_cv);
361 /* Tell PerlIO we are about to tear things apart in case
362 we have layers which are using resources that should
366 PerlIO_destruct(aTHX);
368 if (PL_sv_objcount) {
370 * Try to destruct global references. We do this first so that the
371 * destructors and destructees still exist. Some sv's might remain.
372 * Non-referenced objects are on their own.
377 /* unhook hooks which will soon be, or use, destroyed data */
378 SvREFCNT_dec(PL_warnhook);
379 PL_warnhook = Nullsv;
380 SvREFCNT_dec(PL_diehook);
383 /* call exit list functions */
384 while (PL_exitlistlen-- > 0)
385 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
387 Safefree(PL_exitlist);
389 if (destruct_level == 0){
391 DEBUG_P(debprofdump());
393 #if defined(PERLIO_LAYERS)
394 /* No more IO - including error messages ! */
395 PerlIO_cleanup(aTHX);
398 /* The exit() function will do everything that needs doing. */
399 return STATUS_NATIVE_EXPORT;
402 /* jettison our possibly duplicated environment */
403 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
404 * so we certainly shouldn't free it here
406 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
407 if (environ != PL_origenviron
409 /* only main thread can free environ[0] contents */
410 && PL_curinterp == aTHX
416 for (i = 0; environ[i]; i++)
417 safesysfree(environ[i]);
419 /* Must use safesysfree() when working with environ. */
420 safesysfree(environ);
422 environ = PL_origenviron;
427 /* the syntax tree is shared between clones
428 * so op_free(PL_main_root) only ReREFCNT_dec's
429 * REGEXPs in the parent interpreter
430 * we need to manually ReREFCNT_dec for the clones
433 I32 i = AvFILLp(PL_regex_padav) + 1;
434 SV **ary = AvARRAY(PL_regex_padav);
438 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
440 if (SvFLAGS(resv) & SVf_BREAK) {
441 /* this is PL_reg_curpm, already freed
442 * flag is set in regexec.c:S_regtry
444 SvFLAGS(resv) &= ~SVf_BREAK;
446 else if(SvREPADTMP(resv)) {
447 SvREPADTMP_off(resv);
454 SvREFCNT_dec(PL_regex_padav);
455 PL_regex_padav = Nullav;
459 /* loosen bonds of global variables */
462 (void)PerlIO_close(PL_rsfp);
466 /* Filters for program text */
467 SvREFCNT_dec(PL_rsfp_filters);
468 PL_rsfp_filters = Nullav;
471 PL_preprocess = FALSE;
477 PL_doswitches = FALSE;
478 PL_dowarn = G_WARN_OFF;
479 PL_doextract = FALSE;
480 PL_sawampersand = FALSE; /* must save all match strings */
483 Safefree(PL_inplace);
485 SvREFCNT_dec(PL_patchlevel);
488 SvREFCNT_dec(PL_e_script);
489 PL_e_script = Nullsv;
492 /* magical thingies */
494 SvREFCNT_dec(PL_ofs_sv); /* $, */
497 SvREFCNT_dec(PL_ors_sv); /* $\ */
500 SvREFCNT_dec(PL_rs); /* $/ */
503 PL_multiline = 0; /* $* */
504 Safefree(PL_osname); /* $^O */
507 SvREFCNT_dec(PL_statname);
508 PL_statname = Nullsv;
511 /* defgv, aka *_ should be taken care of elsewhere */
513 /* clean up after study() */
514 SvREFCNT_dec(PL_lastscream);
515 PL_lastscream = Nullsv;
516 Safefree(PL_screamfirst);
518 Safefree(PL_screamnext);
522 Safefree(PL_efloatbuf);
523 PL_efloatbuf = Nullch;
526 /* startup and shutdown function lists */
527 SvREFCNT_dec(PL_beginav);
528 SvREFCNT_dec(PL_beginav_save);
529 SvREFCNT_dec(PL_endav);
530 SvREFCNT_dec(PL_checkav);
531 SvREFCNT_dec(PL_checkav_save);
532 SvREFCNT_dec(PL_initav);
534 PL_beginav_save = Nullav;
537 PL_checkav_save = Nullav;
540 /* shortcuts just get cleared */
546 PL_argvoutgv = Nullgv;
548 PL_stderrgv = Nullgv;
549 PL_last_in_gv = Nullgv;
551 PL_debstash = Nullhv;
553 /* reset so print() ends up where we expect */
556 SvREFCNT_dec(PL_argvout_stack);
557 PL_argvout_stack = Nullav;
559 SvREFCNT_dec(PL_modglobal);
560 PL_modglobal = Nullhv;
561 SvREFCNT_dec(PL_preambleav);
562 PL_preambleav = Nullav;
563 SvREFCNT_dec(PL_subname);
565 SvREFCNT_dec(PL_linestr);
567 SvREFCNT_dec(PL_pidstatus);
568 PL_pidstatus = Nullhv;
569 SvREFCNT_dec(PL_toptarget);
570 PL_toptarget = Nullsv;
571 SvREFCNT_dec(PL_bodytarget);
572 PL_bodytarget = Nullsv;
573 PL_formtarget = Nullsv;
575 /* free locale stuff */
576 #ifdef USE_LOCALE_COLLATE
577 Safefree(PL_collation_name);
578 PL_collation_name = Nullch;
581 #ifdef USE_LOCALE_NUMERIC
582 Safefree(PL_numeric_name);
583 PL_numeric_name = Nullch;
584 SvREFCNT_dec(PL_numeric_radix_sv);
587 /* clear utf8 character classes */
588 SvREFCNT_dec(PL_utf8_alnum);
589 SvREFCNT_dec(PL_utf8_alnumc);
590 SvREFCNT_dec(PL_utf8_ascii);
591 SvREFCNT_dec(PL_utf8_alpha);
592 SvREFCNT_dec(PL_utf8_space);
593 SvREFCNT_dec(PL_utf8_cntrl);
594 SvREFCNT_dec(PL_utf8_graph);
595 SvREFCNT_dec(PL_utf8_digit);
596 SvREFCNT_dec(PL_utf8_upper);
597 SvREFCNT_dec(PL_utf8_lower);
598 SvREFCNT_dec(PL_utf8_print);
599 SvREFCNT_dec(PL_utf8_punct);
600 SvREFCNT_dec(PL_utf8_xdigit);
601 SvREFCNT_dec(PL_utf8_mark);
602 SvREFCNT_dec(PL_utf8_toupper);
603 SvREFCNT_dec(PL_utf8_totitle);
604 SvREFCNT_dec(PL_utf8_tolower);
605 SvREFCNT_dec(PL_utf8_tofold);
606 SvREFCNT_dec(PL_utf8_idstart);
607 SvREFCNT_dec(PL_utf8_idcont);
608 PL_utf8_alnum = Nullsv;
609 PL_utf8_alnumc = Nullsv;
610 PL_utf8_ascii = Nullsv;
611 PL_utf8_alpha = Nullsv;
612 PL_utf8_space = Nullsv;
613 PL_utf8_cntrl = Nullsv;
614 PL_utf8_graph = Nullsv;
615 PL_utf8_digit = Nullsv;
616 PL_utf8_upper = Nullsv;
617 PL_utf8_lower = Nullsv;
618 PL_utf8_print = Nullsv;
619 PL_utf8_punct = Nullsv;
620 PL_utf8_xdigit = Nullsv;
621 PL_utf8_mark = Nullsv;
622 PL_utf8_toupper = Nullsv;
623 PL_utf8_totitle = Nullsv;
624 PL_utf8_tolower = Nullsv;
625 PL_utf8_tofold = Nullsv;
626 PL_utf8_idstart = Nullsv;
627 PL_utf8_idcont = Nullsv;
629 if (!specialWARN(PL_compiling.cop_warnings))
630 SvREFCNT_dec(PL_compiling.cop_warnings);
631 PL_compiling.cop_warnings = Nullsv;
632 if (!specialCopIO(PL_compiling.cop_io))
633 SvREFCNT_dec(PL_compiling.cop_io);
634 PL_compiling.cop_io = Nullsv;
635 CopFILE_free(&PL_compiling);
636 CopSTASH_free(&PL_compiling);
638 /* Prepare to destruct main symbol table. */
643 SvREFCNT_dec(PL_curstname);
644 PL_curstname = Nullsv;
646 /* clear queued errors */
647 SvREFCNT_dec(PL_errors);
651 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
652 if (PL_scopestack_ix != 0)
653 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
654 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
655 (long)PL_scopestack_ix);
656 if (PL_savestack_ix != 0)
657 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
658 "Unbalanced saves: %ld more saves than restores\n",
659 (long)PL_savestack_ix);
660 if (PL_tmps_floor != -1)
661 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
662 (long)PL_tmps_floor + 1);
663 if (cxstack_ix != -1)
664 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
665 (long)cxstack_ix + 1);
668 /* Now absolutely destruct everything, somehow or other, loops or no. */
669 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
670 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
672 /* the 2 is for PL_fdpid and PL_strtab */
673 while (PL_sv_count > 2 && sv_clean_all())
676 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
677 SvFLAGS(PL_fdpid) |= SVt_PVAV;
678 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
679 SvFLAGS(PL_strtab) |= SVt_PVHV;
681 AvREAL_off(PL_fdpid); /* no surviving entries */
682 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
685 #ifdef HAVE_INTERP_INTERN
689 /* Destruct the global string table. */
691 /* Yell and reset the HeVAL() slots that are still holding refcounts,
692 * so that sv_free() won't fail on them.
700 max = HvMAX(PL_strtab);
701 array = HvARRAY(PL_strtab);
704 if (hent && ckWARN_d(WARN_INTERNAL)) {
705 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
706 "Unbalanced string table refcount: (%d) for \"%s\"",
707 HeVAL(hent) - Nullsv, HeKEY(hent));
708 HeVAL(hent) = Nullsv;
718 SvREFCNT_dec(PL_strtab);
721 /* free the pointer table used for cloning */
722 ptr_table_free(PL_ptr_table);
725 /* free special SVs */
727 SvREFCNT(&PL_sv_yes) = 0;
728 sv_clear(&PL_sv_yes);
729 SvANY(&PL_sv_yes) = NULL;
730 SvFLAGS(&PL_sv_yes) = 0;
732 SvREFCNT(&PL_sv_no) = 0;
734 SvANY(&PL_sv_no) = NULL;
735 SvFLAGS(&PL_sv_no) = 0;
739 for (i=0; i<=2; i++) {
740 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
741 sv_clear(PERL_DEBUG_PAD(i));
742 SvANY(PERL_DEBUG_PAD(i)) = NULL;
743 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
747 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
748 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
750 #ifdef DEBUG_LEAKING_SCALARS
751 if (PL_sv_count != 0) {
756 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
757 svend = &sva[SvREFCNT(sva)];
758 for (sv = sva + 1; sv < svend; ++sv) {
759 if (SvTYPE(sv) != SVTYPEMASK) {
760 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
768 #if defined(PERLIO_LAYERS)
769 /* No more IO - including error messages ! */
770 PerlIO_cleanup(aTHX);
773 /* sv_undef needs to stay immortal until after PerlIO_cleanup
774 as currently layers use it rather than Nullsv as a marker
775 for no arg - and will try and SvREFCNT_dec it.
777 SvREFCNT(&PL_sv_undef) = 0;
778 SvREADONLY_off(&PL_sv_undef);
780 Safefree(PL_origfilename);
781 Safefree(PL_reg_start_tmp);
783 Safefree(PL_reg_curpm);
784 Safefree(PL_reg_poscache);
785 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
786 Safefree(PL_op_mask);
787 Safefree(PL_psig_ptr);
788 Safefree(PL_psig_name);
789 Safefree(PL_bitcount);
790 Safefree(PL_psig_pend);
792 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
794 DEBUG_P(debprofdump());
796 #ifdef USE_REENTRANT_API
797 Perl_reentrant_free(aTHX);
802 /* As the absolutely last thing, free the non-arena SV for mess() */
805 /* it could have accumulated taint magic */
806 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
809 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
810 moremagic = mg->mg_moremagic;
811 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
813 Safefree(mg->mg_ptr);
817 /* we know that type >= SVt_PV */
818 (void)SvOOK_off(PL_mess_sv);
819 Safefree(SvPVX(PL_mess_sv));
820 Safefree(SvANY(PL_mess_sv));
821 Safefree(PL_mess_sv);
824 return STATUS_NATIVE_EXPORT;
828 =for apidoc perl_free
830 Releases a Perl interpreter. See L<perlembed>.
838 #if defined(WIN32) || defined(NETWARE)
839 # if defined(PERL_IMPLICIT_SYS)
841 void *host = nw_internal_host;
843 void *host = w32_internal_host;
847 nw_delete_internal_host(host);
849 win32_delete_internal_host(host);
860 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
862 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
863 PL_exitlist[PL_exitlistlen].fn = fn;
864 PL_exitlist[PL_exitlistlen].ptr = ptr;
869 =for apidoc perl_parse
871 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
877 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
882 #ifdef USE_5005THREADS
886 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
889 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
890 setuid perl scripts securely.\n");
899 /* Come here if running an undumped a.out. */
901 PL_origfilename = savepv(argv[0]);
902 PL_do_undump = FALSE;
903 cxstack_ix = -1; /* start label stack again */
905 init_postdump_symbols(argc,argv,env);
910 op_free(PL_main_root);
911 PL_main_root = Nullop;
913 PL_main_start = Nullop;
914 SvREFCNT_dec(PL_main_cv);
918 oldscope = PL_scopestack_ix;
919 PL_dowarn = G_WARN_OFF;
921 #ifdef PERL_FLEXIBLE_EXCEPTIONS
922 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
928 #ifndef PERL_FLEXIBLE_EXCEPTIONS
929 parse_body(env,xsinit);
932 call_list(oldscope, PL_checkav);
939 /* my_exit() was called */
940 while (PL_scopestack_ix > oldscope)
943 PL_curstash = PL_defstash;
945 call_list(oldscope, PL_checkav);
946 ret = STATUS_NATIVE_EXPORT;
949 PerlIO_printf(Perl_error_log, "panic: top_env\n");
957 #ifdef PERL_FLEXIBLE_EXCEPTIONS
959 S_vparse_body(pTHX_ va_list args)
961 char **env = va_arg(args, char**);
962 XSINIT_t xsinit = va_arg(args, XSINIT_t);
964 return parse_body(env, xsinit);
969 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
971 int argc = PL_origargc;
972 char **argv = PL_origargv;
973 char *scriptname = NULL;
975 VOL bool dosearch = FALSE;
979 char *cddir = Nullch;
981 sv_setpvn(PL_linestr,"",0);
982 sv = newSVpvn("",0); /* first used for -I flags */
986 for (argc--,argv++; argc > 0; argc--,argv++) {
987 if (argv[0][0] != '-' || !argv[0][1])
991 validarg = " PHOOEY ";
1000 win32_argv2utf8(argc-1, argv+1);
1003 #ifndef PERL_STRICT_CR
1027 if ((s = moreswitches(s)))
1032 if( !PL_tainting ) {
1033 PL_taint_warn = TRUE;
1040 PL_taint_warn = FALSE;
1045 #ifdef MACOS_TRADITIONAL
1046 /* ignore -e for Dev:Pseudo argument */
1047 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1050 if (PL_euid != PL_uid || PL_egid != PL_gid)
1051 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1053 PL_e_script = newSVpvn("",0);
1054 filter_add(read_e_script, NULL);
1057 sv_catpv(PL_e_script, s);
1059 sv_catpv(PL_e_script, argv[1]);
1063 Perl_croak(aTHX_ "No code specified for -e");
1064 sv_catpv(PL_e_script, "\n");
1067 case 'I': /* -I handled both here and in moreswitches() */
1069 if (!*++s && (s=argv[1]) != Nullch) {
1074 STRLEN len = strlen(s);
1075 p = savepvn(s, len);
1076 incpush(p, TRUE, TRUE, FALSE);
1077 sv_catpvn(sv, "-I", 2);
1078 sv_catpvn(sv, p, len);
1079 sv_catpvn(sv, " ", 1);
1083 Perl_croak(aTHX_ "No directory specified for -I");
1087 PL_preprocess = TRUE;
1097 PL_preambleav = newAV();
1098 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1100 PL_Sv = newSVpv("print myconfig();",0);
1102 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1104 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1106 sv_catpv(PL_Sv,"\" Compile-time options:");
1108 sv_catpv(PL_Sv," DEBUGGING");
1110 # ifdef MULTIPLICITY
1111 sv_catpv(PL_Sv," MULTIPLICITY");
1113 # ifdef USE_5005THREADS
1114 sv_catpv(PL_Sv," USE_5005THREADS");
1116 # ifdef USE_ITHREADS
1117 sv_catpv(PL_Sv," USE_ITHREADS");
1119 # ifdef USE_64_BIT_INT
1120 sv_catpv(PL_Sv," USE_64_BIT_INT");
1122 # ifdef USE_64_BIT_ALL
1123 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1125 # ifdef USE_LONG_DOUBLE
1126 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1128 # ifdef USE_LARGE_FILES
1129 sv_catpv(PL_Sv," USE_LARGE_FILES");
1132 sv_catpv(PL_Sv," USE_SOCKS");
1134 # ifdef PERL_IMPLICIT_CONTEXT
1135 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1137 # ifdef PERL_IMPLICIT_SYS
1138 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1140 sv_catpv(PL_Sv,"\\n\",");
1142 #if defined(LOCAL_PATCH_COUNT)
1143 if (LOCAL_PATCH_COUNT > 0) {
1145 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1146 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1147 if (PL_localpatches[i])
1148 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1152 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1155 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1157 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1160 sv_catpv(PL_Sv, "; \
1162 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1165 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1168 print \" \\%ENV:\\n @env\\n\" if @env; \
1169 print \" \\@INC:\\n @INC\\n\";");
1172 PL_Sv = newSVpv("config_vars(qw(",0);
1173 sv_catpv(PL_Sv, ++s);
1174 sv_catpv(PL_Sv, "))");
1177 av_push(PL_preambleav, PL_Sv);
1178 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1181 PL_doextract = TRUE;
1189 if (!*++s || isSPACE(*s)) {
1193 /* catch use of gnu style long options */
1194 if (strEQ(s, "version")) {
1198 if (strEQ(s, "help")) {
1205 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1209 sv_setsv(get_sv("/", TRUE), PL_rs);
1212 #ifndef SECURE_INTERNAL_GETENV
1215 (s = PerlEnv_getenv("PERL5OPT")))
1220 if (*s == '-' && *(s+1) == 'T') {
1222 PL_taint_warn = FALSE;
1225 char *popt_copy = Nullch;
1238 if (!strchr("DIMUdmtw", *s))
1239 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1243 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1244 s = popt_copy + (s - popt);
1245 d = popt_copy + (d - popt);
1252 if( !PL_tainting ) {
1253 PL_taint_warn = TRUE;
1263 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1264 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1268 scriptname = argv[0];
1271 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1273 else if (scriptname == Nullch) {
1275 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1283 open_script(scriptname,dosearch,sv,&fdscript);
1285 validate_suid(validarg, scriptname,fdscript);
1288 #if defined(SIGCHLD) || defined(SIGCLD)
1291 # define SIGCHLD SIGCLD
1293 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1294 if (sigstate == SIG_IGN) {
1295 if (ckWARN(WARN_SIGNAL))
1296 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1297 "Can't ignore signal CHLD, forcing to default");
1298 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1304 #ifdef MACOS_TRADITIONAL
1305 if (PL_doextract || gMacPerl_AlwaysExtract) {
1310 if (cddir && PerlDir_chdir(cddir) < 0)
1311 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1315 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1316 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1317 CvUNIQUE_on(PL_compcv);
1319 CvPADLIST(PL_compcv) = pad_new(0);
1320 #ifdef USE_5005THREADS
1321 CvOWNER(PL_compcv) = 0;
1322 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1323 MUTEX_INIT(CvMUTEXP(PL_compcv));
1324 #endif /* USE_5005THREADS */
1327 boot_core_UNIVERSAL();
1329 boot_core_xsutils();
1333 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1335 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1341 # ifdef HAS_SOCKS5_INIT
1342 socks5_init(argv[0]);
1348 init_predump_symbols();
1349 /* init_postdump_symbols not currently designed to be called */
1350 /* more than once (ENV isn't cleared first, for example) */
1351 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1353 init_postdump_symbols(argc,argv,env);
1355 /* PL_utf8locale is conditionally turned on by
1356 * locale.c:Perl_init_i18nl10n() if the environment
1357 * look like the user wants to use UTF-8.
1358 * PL_wantutf8 is turned on by -C or by $ENV{PERL_UTF8_LOCALE}. */
1359 if (PL_utf8locale && PL_wantutf8) { /* Requires init_predump_symbols(). */
1363 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1364 * _and_ the default open discipline. */
1365 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1366 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1367 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1368 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1369 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1370 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1371 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1372 sv_setpvn(sv, ":utf8\0:utf8", 11);
1379 /* now parse the script */
1381 SETERRNO(0,SS_NORMAL);
1383 #ifdef MACOS_TRADITIONAL
1384 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1386 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1388 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1389 MacPerl_MPWFileName(PL_origfilename));
1393 if (yyparse() || PL_error_count) {
1395 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1397 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1402 CopLINE_set(PL_curcop, 0);
1403 PL_curstash = PL_defstash;
1404 PL_preprocess = FALSE;
1406 SvREFCNT_dec(PL_e_script);
1407 PL_e_script = Nullsv;
1414 SAVECOPFILE(PL_curcop);
1415 SAVECOPLINE(PL_curcop);
1416 gv_check(PL_defstash);
1423 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1424 dump_mstats("after compilation:");
1433 =for apidoc perl_run
1435 Tells a Perl interpreter to run. See L<perlembed>.
1446 #ifdef USE_5005THREADS
1450 oldscope = PL_scopestack_ix;
1455 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1457 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1463 cxstack_ix = -1; /* start context stack again */
1465 case 0: /* normal completion */
1466 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1471 case 2: /* my_exit() */
1472 while (PL_scopestack_ix > oldscope)
1475 PL_curstash = PL_defstash;
1476 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1477 PL_endav && !PL_minus_c)
1478 call_list(oldscope, PL_endav);
1480 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1481 dump_mstats("after execution: ");
1483 ret = STATUS_NATIVE_EXPORT;
1487 POPSTACK_TO(PL_mainstack);
1490 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1500 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1502 S_vrun_body(pTHX_ va_list args)
1504 I32 oldscope = va_arg(args, I32);
1506 return run_body(oldscope);
1512 S_run_body(pTHX_ I32 oldscope)
1514 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1515 PL_sawampersand ? "Enabling" : "Omitting"));
1517 if (!PL_restartop) {
1518 DEBUG_x(dump_all());
1519 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1520 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1524 #ifdef MACOS_TRADITIONAL
1525 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1526 (gMacPerl_ErrorFormat ? "# " : ""),
1527 MacPerl_MPWFileName(PL_origfilename));
1529 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1533 if (PERLDB_SINGLE && PL_DBsingle)
1534 sv_setiv(PL_DBsingle, 1);
1536 call_list(oldscope, PL_initav);
1542 PL_op = PL_restartop;
1546 else if (PL_main_start) {
1547 CvDEPTH(PL_main_cv) = 1;
1548 PL_op = PL_main_start;
1558 =head1 SV Manipulation Functions
1560 =for apidoc p||get_sv
1562 Returns the SV of the specified Perl scalar. If C<create> is set and the
1563 Perl variable does not exist then it will be created. If C<create> is not
1564 set and the variable does not exist then NULL is returned.
1570 Perl_get_sv(pTHX_ const char *name, I32 create)
1573 #ifdef USE_5005THREADS
1574 if (name[1] == '\0' && !isALPHA(name[0])) {
1575 PADOFFSET tmp = find_threadsv(name);
1576 if (tmp != NOT_IN_PAD)
1577 return THREADSV(tmp);
1579 #endif /* USE_5005THREADS */
1580 gv = gv_fetchpv(name, create, SVt_PV);
1587 =head1 Array Manipulation Functions
1589 =for apidoc p||get_av
1591 Returns the AV of the specified Perl array. If C<create> is set and the
1592 Perl variable does not exist then it will be created. If C<create> is not
1593 set and the variable does not exist then NULL is returned.
1599 Perl_get_av(pTHX_ const char *name, I32 create)
1601 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1610 =head1 Hash Manipulation Functions
1612 =for apidoc p||get_hv
1614 Returns the HV of the specified Perl hash. If C<create> is set and the
1615 Perl variable does not exist then it will be created. If C<create> is not
1616 set and the variable does not exist then NULL is returned.
1622 Perl_get_hv(pTHX_ const char *name, I32 create)
1624 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1633 =head1 CV Manipulation Functions
1635 =for apidoc p||get_cv
1637 Returns the CV of the specified Perl subroutine. If C<create> is set and
1638 the Perl subroutine does not exist then it will be declared (which has the
1639 same effect as saying C<sub name;>). If C<create> is not set and the
1640 subroutine does not exist then NULL is returned.
1646 Perl_get_cv(pTHX_ const char *name, I32 create)
1648 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1649 /* XXX unsafe for threads if eval_owner isn't held */
1650 /* XXX this is probably not what they think they're getting.
1651 * It has the same effect as "sub name;", i.e. just a forward
1653 if (create && !GvCVu(gv))
1654 return newSUB(start_subparse(FALSE, 0),
1655 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1663 /* Be sure to refetch the stack pointer after calling these routines. */
1667 =head1 Callback Functions
1669 =for apidoc p||call_argv
1671 Performs a callback to the specified Perl sub. See L<perlcall>.
1677 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1679 /* See G_* flags in cop.h */
1680 /* null terminated arg list */
1687 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1692 return call_pv(sub_name, flags);
1696 =for apidoc p||call_pv
1698 Performs a callback to the specified Perl sub. See L<perlcall>.
1704 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1705 /* name of the subroutine */
1706 /* See G_* flags in cop.h */
1708 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1712 =for apidoc p||call_method
1714 Performs a callback to the specified Perl method. The blessed object must
1715 be on the stack. See L<perlcall>.
1721 Perl_call_method(pTHX_ const char *methname, I32 flags)
1722 /* name of the subroutine */
1723 /* See G_* flags in cop.h */
1725 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1728 /* May be called with any of a CV, a GV, or an SV containing the name. */
1730 =for apidoc p||call_sv
1732 Performs a callback to the Perl sub whose name is in the SV. See
1739 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1740 /* See G_* flags in cop.h */
1743 LOGOP myop; /* fake syntax tree node */
1746 volatile I32 retval = 0;
1748 bool oldcatch = CATCH_GET;
1753 if (flags & G_DISCARD) {
1758 Zero(&myop, 1, LOGOP);
1759 myop.op_next = Nullop;
1760 if (!(flags & G_NOARGS))
1761 myop.op_flags |= OPf_STACKED;
1762 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1763 (flags & G_ARRAY) ? OPf_WANT_LIST :
1768 EXTEND(PL_stack_sp, 1);
1769 *++PL_stack_sp = sv;
1771 oldscope = PL_scopestack_ix;
1773 if (PERLDB_SUB && PL_curstash != PL_debstash
1774 /* Handle first BEGIN of -d. */
1775 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1776 /* Try harder, since this may have been a sighandler, thus
1777 * curstash may be meaningless. */
1778 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1779 && !(flags & G_NODEBUG))
1780 PL_op->op_private |= OPpENTERSUB_DB;
1782 if (flags & G_METHOD) {
1783 Zero(&method_op, 1, UNOP);
1784 method_op.op_next = PL_op;
1785 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1786 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1787 PL_op = (OP*)&method_op;
1790 if (!(flags & G_EVAL)) {
1792 call_body((OP*)&myop, FALSE);
1793 retval = PL_stack_sp - (PL_stack_base + oldmark);
1794 CATCH_SET(oldcatch);
1797 myop.op_other = (OP*)&myop;
1799 /* we're trying to emulate pp_entertry() here */
1801 register PERL_CONTEXT *cx;
1802 I32 gimme = GIMME_V;
1807 push_return(Nullop);
1808 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1810 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1812 PL_in_eval = EVAL_INEVAL;
1813 if (flags & G_KEEPERR)
1814 PL_in_eval |= EVAL_KEEPERR;
1820 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1822 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1829 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1831 call_body((OP*)&myop, FALSE);
1833 retval = PL_stack_sp - (PL_stack_base + oldmark);
1834 if (!(flags & G_KEEPERR))
1841 /* my_exit() was called */
1842 PL_curstash = PL_defstash;
1845 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1846 Perl_croak(aTHX_ "Callback called exit");
1851 PL_op = PL_restartop;
1855 PL_stack_sp = PL_stack_base + oldmark;
1856 if (flags & G_ARRAY)
1860 *++PL_stack_sp = &PL_sv_undef;
1865 if (PL_scopestack_ix > oldscope) {
1869 register PERL_CONTEXT *cx;
1881 if (flags & G_DISCARD) {
1882 PL_stack_sp = PL_stack_base + oldmark;
1891 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1893 S_vcall_body(pTHX_ va_list args)
1895 OP *myop = va_arg(args, OP*);
1896 int is_eval = va_arg(args, int);
1898 call_body(myop, is_eval);
1904 S_call_body(pTHX_ OP *myop, int is_eval)
1906 if (PL_op == myop) {
1908 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1910 PL_op = Perl_pp_entersub(aTHX); /* this does */
1916 /* Eval a string. The G_EVAL flag is always assumed. */
1919 =for apidoc p||eval_sv
1921 Tells Perl to C<eval> the string in the SV.
1927 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1929 /* See G_* flags in cop.h */
1932 UNOP myop; /* fake syntax tree node */
1933 volatile I32 oldmark = SP - PL_stack_base;
1934 volatile I32 retval = 0;
1940 if (flags & G_DISCARD) {
1947 Zero(PL_op, 1, UNOP);
1948 EXTEND(PL_stack_sp, 1);
1949 *++PL_stack_sp = sv;
1950 oldscope = PL_scopestack_ix;
1952 if (!(flags & G_NOARGS))
1953 myop.op_flags = OPf_STACKED;
1954 myop.op_next = Nullop;
1955 myop.op_type = OP_ENTEREVAL;
1956 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1957 (flags & G_ARRAY) ? OPf_WANT_LIST :
1959 if (flags & G_KEEPERR)
1960 myop.op_flags |= OPf_SPECIAL;
1962 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1964 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1971 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1973 call_body((OP*)&myop,TRUE);
1975 retval = PL_stack_sp - (PL_stack_base + oldmark);
1976 if (!(flags & G_KEEPERR))
1983 /* my_exit() was called */
1984 PL_curstash = PL_defstash;
1987 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1988 Perl_croak(aTHX_ "Callback called exit");
1993 PL_op = PL_restartop;
1997 PL_stack_sp = PL_stack_base + oldmark;
1998 if (flags & G_ARRAY)
2002 *++PL_stack_sp = &PL_sv_undef;
2008 if (flags & G_DISCARD) {
2009 PL_stack_sp = PL_stack_base + oldmark;
2019 =for apidoc p||eval_pv
2021 Tells Perl to C<eval> the given string and return an SV* result.
2027 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2030 SV* sv = newSVpv(p, 0);
2032 eval_sv(sv, G_SCALAR);
2039 if (croak_on_error && SvTRUE(ERRSV)) {
2041 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2047 /* Require a module. */
2050 =head1 Embedding Functions
2052 =for apidoc p||require_pv
2054 Tells Perl to C<require> the file named by the string argument. It is
2055 analogous to the Perl code C<eval "require '$file'">. It's even
2056 implemented that way; consider using Perl_load_module instead.
2061 Perl_require_pv(pTHX_ const char *pv)
2065 PUSHSTACKi(PERLSI_REQUIRE);
2067 sv = sv_newmortal();
2068 sv_setpv(sv, "require '");
2071 eval_sv(sv, G_DISCARD);
2077 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2081 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2082 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2086 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2088 /* This message really ought to be max 23 lines.
2089 * Removed -h because the user already knows that option. Others? */
2091 static char *usage_msg[] = {
2092 "-0[octal] specify record separator (\\0, if no argument)",
2093 "-a autosplit mode with -n or -p (splits $_ into @F)",
2094 "-C enable native wide character system interfaces",
2095 "-c check syntax only (runs BEGIN and CHECK blocks)",
2096 "-d[:debugger] run program under debugger",
2097 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2098 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2099 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2100 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2101 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2102 "-l[octal] enable line ending processing, specifies line terminator",
2103 "-[mM][-]module execute `use/no module...' before executing program",
2104 "-n assume 'while (<>) { ... }' loop around program",
2105 "-p assume loop like -n but print line also, like sed",
2106 "-P run program through C preprocessor before compilation",
2107 "-s enable rudimentary parsing for switches after programfile",
2108 "-S look for programfile using PATH environment variable",
2109 "-T enable tainting checks",
2110 "-t enable tainting warnings",
2111 "-u dump core after parsing program",
2112 "-U allow unsafe operations",
2113 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2114 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2115 "-w enable many useful warnings (RECOMMENDED)",
2116 "-W enable all warnings",
2117 "-X disable all warnings",
2118 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2122 char **p = usage_msg;
2124 PerlIO_printf(PerlIO_stdout(),
2125 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2128 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2131 /* This routine handles any switches that can be given during run */
2134 Perl_moreswitches(pTHX_ char *s)
2144 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2145 SvREFCNT_dec(PL_rs);
2146 if (rschar & ~((U8)~0))
2147 PL_rs = &PL_sv_undef;
2148 else if (!rschar && numlen >= 2)
2149 PL_rs = newSVpvn("", 0);
2151 char ch = (char)rschar;
2152 PL_rs = newSVpvn(&ch, 1);
2157 PL_wantutf8 = TRUE; /* Can be set earlier by $ENV{PERL_UTF8_LOCALE}. */
2160 PL_wantutf8 = (bool) atoi(s + 1);
2161 for (s++; isDIGIT(*s); s++) ;
2167 while (*s && !isSPACE(*s)) ++s;
2169 PL_splitstr = savepv(PL_splitstr);
2182 /* The following permits -d:Mod to accepts arguments following an =
2183 in the fashion that -MSome::Mod does. */
2184 if (*s == ':' || *s == '=') {
2187 sv = newSVpv("use Devel::", 0);
2189 /* We now allow -d:Module=Foo,Bar */
2190 while(isALNUM(*s) || *s==':') ++s;
2192 sv_catpv(sv, start);
2194 sv_catpvn(sv, start, s-start);
2195 sv_catpv(sv, " split(/,/,q{");
2200 my_setenv("PERL5DB", SvPV(sv, PL_na));
2203 PL_perldb = PERLDB_ALL;
2211 if (isALPHA(s[1])) {
2212 /* if adding extra options, remember to update DEBUG_MASK */
2213 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2216 for (s++; *s && (d = strchr(debopts,*s)); s++)
2217 PL_debug |= 1 << (d - debopts);
2220 PL_debug = atoi(s+1);
2221 for (s++; isDIGIT(*s); s++) ;
2224 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2225 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2226 "-Dp not implemented on this platform\n");
2228 PL_debug |= DEBUG_TOP_FLAG;
2229 #else /* !DEBUGGING */
2230 if (ckWARN_d(WARN_DEBUGGING))
2231 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2232 "Recompile perl with -DDEBUGGING to use -D switch\n");
2233 for (s++; isALNUM(*s); s++) ;
2239 usage(PL_origargv[0]);
2243 Safefree(PL_inplace);
2244 #if defined(__CYGWIN__) /* do backup extension automagically */
2245 if (*(s+1) == '\0') {
2246 PL_inplace = savepv(".bak");
2249 #endif /* __CYGWIN__ */
2250 PL_inplace = savepv(s+1);
2252 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2255 if (*s == '-') /* Additional switches on #! line. */
2259 case 'I': /* -I handled both here and in parse_body() */
2262 while (*s && isSPACE(*s))
2267 /* ignore trailing spaces (possibly followed by other switches) */
2269 for (e = p; *e && !isSPACE(*e); e++) ;
2273 } while (*p && *p != '-');
2274 e = savepvn(s, e-s);
2275 incpush(e, TRUE, TRUE, FALSE);
2282 Perl_croak(aTHX_ "No directory specified for -I");
2288 SvREFCNT_dec(PL_ors_sv);
2293 PL_ors_sv = newSVpvn("\n",1);
2294 numlen = 3 + (*s == '0');
2295 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2299 if (RsPARA(PL_rs)) {
2300 PL_ors_sv = newSVpvn("\n\n",2);
2303 PL_ors_sv = newSVsv(PL_rs);
2308 forbid_setid("-M"); /* XXX ? */
2311 forbid_setid("-m"); /* XXX ? */
2316 /* -M-foo == 'no foo' */
2317 if (*s == '-') { use = "no "; ++s; }
2318 sv = newSVpv(use,0);
2320 /* We allow -M'Module qw(Foo Bar)' */
2321 while(isALNUM(*s) || *s==':') ++s;
2323 sv_catpv(sv, start);
2324 if (*(start-1) == 'm') {
2326 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2327 sv_catpv( sv, " ()");
2331 Perl_croak(aTHX_ "Module name required with -%c option",
2333 sv_catpvn(sv, start, s-start);
2334 sv_catpv(sv, " split(/,/,q{");
2340 PL_preambleav = newAV();
2341 av_push(PL_preambleav, sv);
2344 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2356 PL_doswitches = TRUE;
2361 Perl_croak(aTHX_ "Too late for \"-t\" option");
2366 Perl_croak(aTHX_ "Too late for \"-T\" option");
2370 #ifdef MACOS_TRADITIONAL
2371 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2373 PL_do_undump = TRUE;
2382 PerlIO_printf(PerlIO_stdout(),
2383 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2384 PL_patchlevel, ARCHNAME));
2386 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2387 PerlIO_printf(PerlIO_stdout(),
2388 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2389 PerlIO_printf(PerlIO_stdout(),
2390 Perl_form(aTHX_ " built under %s at %s %s\n",
2391 OSNAME, __DATE__, __TIME__));
2392 PerlIO_printf(PerlIO_stdout(),
2393 Perl_form(aTHX_ " OS Specific Release: %s\n",
2397 #if defined(LOCAL_PATCH_COUNT)
2398 if (LOCAL_PATCH_COUNT > 0)
2399 PerlIO_printf(PerlIO_stdout(),
2400 "\n(with %d registered patch%s, "
2401 "see perl -V for more detail)",
2402 (int)LOCAL_PATCH_COUNT,
2403 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2406 PerlIO_printf(PerlIO_stdout(),
2407 "\n\nCopyright 1987-2002, Larry Wall\n");
2408 #ifdef MACOS_TRADITIONAL
2409 PerlIO_printf(PerlIO_stdout(),
2410 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2411 "maintained by Chris Nandor\n");
2414 PerlIO_printf(PerlIO_stdout(),
2415 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2418 PerlIO_printf(PerlIO_stdout(),
2419 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2420 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2423 PerlIO_printf(PerlIO_stdout(),
2424 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2425 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2428 PerlIO_printf(PerlIO_stdout(),
2429 "atariST series port, ++jrb bammi@cadence.com\n");
2432 PerlIO_printf(PerlIO_stdout(),
2433 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2436 PerlIO_printf(PerlIO_stdout(),
2437 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2440 PerlIO_printf(PerlIO_stdout(),
2441 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2444 PerlIO_printf(PerlIO_stdout(),
2445 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2448 PerlIO_printf(PerlIO_stdout(),
2449 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2452 PerlIO_printf(PerlIO_stdout(),
2453 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2456 PerlIO_printf(PerlIO_stdout(),
2457 "MiNT port by Guido Flohr, 1997-1999\n");
2460 PerlIO_printf(PerlIO_stdout(),
2461 "EPOC port by Olaf Flebbe, 1999-2002\n");
2464 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2465 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2468 #ifdef BINARY_BUILD_NOTICE
2469 BINARY_BUILD_NOTICE;
2471 PerlIO_printf(PerlIO_stdout(),
2473 Perl may be copied only under the terms of either the Artistic License or the\n\
2474 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2475 Complete documentation for Perl, including FAQ lists, should be found on\n\
2476 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2477 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2480 if (! (PL_dowarn & G_WARN_ALL_MASK))
2481 PL_dowarn |= G_WARN_ON;
2485 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2486 if (!specialWARN(PL_compiling.cop_warnings))
2487 SvREFCNT_dec(PL_compiling.cop_warnings);
2488 PL_compiling.cop_warnings = pWARN_ALL ;
2492 PL_dowarn = G_WARN_ALL_OFF;
2493 if (!specialWARN(PL_compiling.cop_warnings))
2494 SvREFCNT_dec(PL_compiling.cop_warnings);
2495 PL_compiling.cop_warnings = pWARN_NONE ;
2500 if (s[1] == '-') /* Additional switches on #! line. */
2505 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2511 #ifdef ALTERNATE_SHEBANG
2512 case 'S': /* OS/2 needs -S on "extproc" line. */
2520 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2525 /* compliments of Tom Christiansen */
2527 /* unexec() can be found in the Gnu emacs distribution */
2528 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2531 Perl_my_unexec(pTHX)
2539 prog = newSVpv(BIN_EXP, 0);
2540 sv_catpv(prog, "/perl");
2541 file = newSVpv(PL_origfilename, 0);
2542 sv_catpv(file, ".perldump");
2544 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2545 /* unexec prints msg to stderr in case of failure */
2546 PerlProc_exit(status);
2549 # include <lib$routines.h>
2550 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2552 ABORT(); /* for use with undump */
2557 /* initialize curinterp */
2563 # define PERLVAR(var,type)
2564 # define PERLVARA(var,n,type)
2565 # if defined(PERL_IMPLICIT_CONTEXT)
2566 # if defined(USE_5005THREADS)
2567 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2568 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2569 # else /* !USE_5005THREADS */
2570 # define PERLVARI(var,type,init) aTHX->var = init;
2571 # define PERLVARIC(var,type,init) aTHX->var = init;
2572 # endif /* USE_5005THREADS */
2574 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2575 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2577 # include "intrpvar.h"
2578 # ifndef USE_5005THREADS
2579 # include "thrdvar.h"
2586 # define PERLVAR(var,type)
2587 # define PERLVARA(var,n,type)
2588 # define PERLVARI(var,type,init) PL_##var = init;
2589 # define PERLVARIC(var,type,init) PL_##var = init;
2590 # include "intrpvar.h"
2591 # ifndef USE_5005THREADS
2592 # include "thrdvar.h"
2603 S_init_main_stash(pTHX)
2607 PL_curstash = PL_defstash = newHV();
2608 PL_curstname = newSVpvn("main",4);
2609 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2610 SvREFCNT_dec(GvHV(gv));
2611 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2613 HvNAME(PL_defstash) = savepv("main");
2614 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2615 GvMULTI_on(PL_incgv);
2616 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2617 GvMULTI_on(PL_hintgv);
2618 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2619 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2620 GvMULTI_on(PL_errgv);
2621 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2622 GvMULTI_on(PL_replgv);
2623 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2624 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2625 sv_setpvn(ERRSV, "", 0);
2626 PL_curstash = PL_defstash;
2627 CopSTASH_set(&PL_compiling, PL_defstash);
2628 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2629 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2630 /* We must init $/ before switches are processed. */
2631 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2635 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2639 char *cpp_discard_flag;
2645 PL_origfilename = savepv("-e");
2648 /* if find_script() returns, it returns a malloc()-ed value */
2649 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2651 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2652 char *s = scriptname + 8;
2653 *fdscript = atoi(s);
2657 scriptname = savepv(s + 1);
2658 Safefree(PL_origfilename);
2659 PL_origfilename = scriptname;
2664 CopFILE_free(PL_curcop);
2665 CopFILE_set(PL_curcop, PL_origfilename);
2666 if (strEQ(PL_origfilename,"-"))
2668 if (*fdscript >= 0) {
2669 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2670 # if defined(HAS_FCNTL) && defined(F_SETFD)
2672 /* ensure close-on-exec */
2673 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2676 else if (PL_preprocess) {
2677 char *cpp_cfg = CPPSTDIN;
2678 SV *cpp = newSVpvn("",0);
2679 SV *cmd = NEWSV(0,0);
2681 if (strEQ(cpp_cfg, "cppstdin"))
2682 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2683 sv_catpv(cpp, cpp_cfg);
2686 sv_catpvn(sv, "-I", 2);
2687 sv_catpv(sv,PRIVLIB_EXP);
2690 DEBUG_P(PerlIO_printf(Perl_debug_log,
2691 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2692 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2694 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2701 cpp_discard_flag = "";
2703 cpp_discard_flag = "-C";
2707 perl = os2_execname(aTHX);
2709 perl = PL_origargv[0];
2713 /* This strips off Perl comments which might interfere with
2714 the C pre-processor, including #!. #line directives are
2715 deliberately stripped to avoid confusion with Perl's version
2716 of #line. FWP played some golf with it so it will fit
2717 into VMS's 255 character buffer.
2720 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2722 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2724 Perl_sv_setpvf(aTHX_ cmd, "\
2725 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2726 perl, quote, code, quote, scriptname, cpp,
2727 cpp_discard_flag, sv, CPPMINUS);
2729 PL_doextract = FALSE;
2730 # ifdef IAMSUID /* actually, this is caught earlier */
2731 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2733 (void)seteuid(PL_uid); /* musn't stay setuid root */
2735 # ifdef HAS_SETREUID
2736 (void)setreuid((Uid_t)-1, PL_uid);
2738 # ifdef HAS_SETRESUID
2739 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2741 PerlProc_setuid(PL_uid);
2745 if (PerlProc_geteuid() != PL_uid)
2746 Perl_croak(aTHX_ "Can't do seteuid!\n");
2748 # endif /* IAMSUID */
2750 DEBUG_P(PerlIO_printf(Perl_debug_log,
2751 "PL_preprocess: cmd=\"%s\"\n",
2754 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2758 else if (!*scriptname) {
2759 forbid_setid("program input from stdin");
2760 PL_rsfp = PerlIO_stdin();
2763 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2764 # if defined(HAS_FCNTL) && defined(F_SETFD)
2766 /* ensure close-on-exec */
2767 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2772 # ifndef IAMSUID /* in case script is not readable before setuid */
2774 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2775 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2778 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2779 BIN_EXP, (int)PERL_REVISION,
2781 (int)PERL_SUBVERSION), PL_origargv);
2782 Perl_croak(aTHX_ "Can't do setuid\n");
2788 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2791 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2792 CopFILE(PL_curcop), Strerror(errno));
2798 * I_SYSSTATVFS HAS_FSTATVFS
2800 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2801 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2802 * here so that metaconfig picks them up. */
2806 S_fd_on_nosuid_fs(pTHX_ int fd)
2808 int check_okay = 0; /* able to do all the required sys/libcalls */
2809 int on_nosuid = 0; /* the fd is on a nosuid fs */
2811 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2812 * fstatvfs() is UNIX98.
2813 * fstatfs() is 4.3 BSD.
2814 * ustat()+getmnt() is pre-4.3 BSD.
2815 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2816 * an irrelevant filesystem while trying to reach the right one.
2819 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2821 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2822 defined(HAS_FSTATVFS)
2823 # define FD_ON_NOSUID_CHECK_OKAY
2824 struct statvfs stfs;
2826 check_okay = fstatvfs(fd, &stfs) == 0;
2827 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2828 # endif /* fstatvfs */
2830 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2831 defined(PERL_MOUNT_NOSUID) && \
2832 defined(HAS_FSTATFS) && \
2833 defined(HAS_STRUCT_STATFS) && \
2834 defined(HAS_STRUCT_STATFS_F_FLAGS)
2835 # define FD_ON_NOSUID_CHECK_OKAY
2838 check_okay = fstatfs(fd, &stfs) == 0;
2839 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2840 # endif /* fstatfs */
2842 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2843 defined(PERL_MOUNT_NOSUID) && \
2844 defined(HAS_FSTAT) && \
2845 defined(HAS_USTAT) && \
2846 defined(HAS_GETMNT) && \
2847 defined(HAS_STRUCT_FS_DATA) && \
2849 # define FD_ON_NOSUID_CHECK_OKAY
2852 if (fstat(fd, &fdst) == 0) {
2854 if (ustat(fdst.st_dev, &us) == 0) {
2856 /* NOSTAT_ONE here because we're not examining fields which
2857 * vary between that case and STAT_ONE. */
2858 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2859 size_t cmplen = sizeof(us.f_fname);
2860 if (sizeof(fsd.fd_req.path) < cmplen)
2861 cmplen = sizeof(fsd.fd_req.path);
2862 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2863 fdst.st_dev == fsd.fd_req.dev) {
2865 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2871 # endif /* fstat+ustat+getmnt */
2873 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2874 defined(HAS_GETMNTENT) && \
2875 defined(HAS_HASMNTOPT) && \
2876 defined(MNTOPT_NOSUID)
2877 # define FD_ON_NOSUID_CHECK_OKAY
2878 FILE *mtab = fopen("/etc/mtab", "r");
2879 struct mntent *entry;
2882 if (mtab && (fstat(fd, &stb) == 0)) {
2883 while (entry = getmntent(mtab)) {
2884 if (stat(entry->mnt_dir, &fsb) == 0
2885 && fsb.st_dev == stb.st_dev)
2887 /* found the filesystem */
2889 if (hasmntopt(entry, MNTOPT_NOSUID))
2892 } /* A single fs may well fail its stat(). */
2897 # endif /* getmntent+hasmntopt */
2900 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2903 #endif /* IAMSUID */
2906 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2912 /* do we need to emulate setuid on scripts? */
2914 /* This code is for those BSD systems that have setuid #! scripts disabled
2915 * in the kernel because of a security problem. Merely defining DOSUID
2916 * in perl will not fix that problem, but if you have disabled setuid
2917 * scripts in the kernel, this will attempt to emulate setuid and setgid
2918 * on scripts that have those now-otherwise-useless bits set. The setuid
2919 * root version must be called suidperl or sperlN.NNN. If regular perl
2920 * discovers that it has opened a setuid script, it calls suidperl with
2921 * the same argv that it had. If suidperl finds that the script it has
2922 * just opened is NOT setuid root, it sets the effective uid back to the
2923 * uid. We don't just make perl setuid root because that loses the
2924 * effective uid we had before invoking perl, if it was different from the
2927 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2928 * be defined in suidperl only. suidperl must be setuid root. The
2929 * Configure script will set this up for you if you want it.
2935 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2936 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2937 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2942 #ifndef HAS_SETREUID
2943 /* On this access check to make sure the directories are readable,
2944 * there is actually a small window that the user could use to make
2945 * filename point to an accessible directory. So there is a faint
2946 * chance that someone could execute a setuid script down in a
2947 * non-accessible directory. I don't know what to do about that.
2948 * But I don't think it's too important. The manual lies when
2949 * it says access() is useful in setuid programs.
2951 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2952 Perl_croak(aTHX_ "Permission denied");
2954 /* If we can swap euid and uid, then we can determine access rights
2955 * with a simple stat of the file, and then compare device and
2956 * inode to make sure we did stat() on the same file we opened.
2957 * Then we just have to make sure he or she can execute it.
2964 setreuid(PL_euid,PL_uid) < 0
2967 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2970 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2971 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2972 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2973 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2974 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2975 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2976 Perl_croak(aTHX_ "Permission denied");
2978 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2979 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2980 (void)PerlIO_close(PL_rsfp);
2981 Perl_croak(aTHX_ "Permission denied\n");
2985 setreuid(PL_uid,PL_euid) < 0
2987 # if defined(HAS_SETRESUID)
2988 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2991 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2992 Perl_croak(aTHX_ "Can't reswap uid and euid");
2993 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2994 Perl_croak(aTHX_ "Permission denied\n");
2996 #endif /* HAS_SETREUID */
2997 #endif /* IAMSUID */
2999 if (!S_ISREG(PL_statbuf.st_mode))
3000 Perl_croak(aTHX_ "Permission denied");
3001 if (PL_statbuf.st_mode & S_IWOTH)
3002 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3003 PL_doswitches = FALSE; /* -s is insecure in suid */
3004 CopLINE_inc(PL_curcop);
3005 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3006 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3007 Perl_croak(aTHX_ "No #! line");
3008 s = SvPV(PL_linestr,n_a)+2;
3010 while (!isSPACE(*s)) s++;
3011 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3012 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3013 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3014 Perl_croak(aTHX_ "Not a perl script");
3015 while (*s == ' ' || *s == '\t') s++;
3017 * #! arg must be what we saw above. They can invoke it by
3018 * mentioning suidperl explicitly, but they may not add any strange
3019 * arguments beyond what #! says if they do invoke suidperl that way.
3021 len = strlen(validarg);
3022 if (strEQ(validarg," PHOOEY ") ||
3023 strnNE(s,validarg,len) || !isSPACE(s[len]))
3024 Perl_croak(aTHX_ "Args must match #! line");
3027 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3028 PL_euid == PL_statbuf.st_uid)
3030 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3031 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3032 #endif /* IAMSUID */
3034 if (PL_euid) { /* oops, we're not the setuid root perl */
3035 (void)PerlIO_close(PL_rsfp);
3038 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3039 (int)PERL_REVISION, (int)PERL_VERSION,
3040 (int)PERL_SUBVERSION), PL_origargv);
3042 Perl_croak(aTHX_ "Can't do setuid\n");
3045 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3047 (void)setegid(PL_statbuf.st_gid);
3050 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3052 #ifdef HAS_SETRESGID
3053 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3055 PerlProc_setgid(PL_statbuf.st_gid);
3059 if (PerlProc_getegid() != PL_statbuf.st_gid)
3060 Perl_croak(aTHX_ "Can't do setegid!\n");
3062 if (PL_statbuf.st_mode & S_ISUID) {
3063 if (PL_statbuf.st_uid != PL_euid)
3065 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3068 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3070 #ifdef HAS_SETRESUID
3071 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3073 PerlProc_setuid(PL_statbuf.st_uid);
3077 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3078 Perl_croak(aTHX_ "Can't do seteuid!\n");
3080 else if (PL_uid) { /* oops, mustn't run as root */
3082 (void)seteuid((Uid_t)PL_uid);
3085 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3087 #ifdef HAS_SETRESUID
3088 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3090 PerlProc_setuid((Uid_t)PL_uid);
3094 if (PerlProc_geteuid() != PL_uid)
3095 Perl_croak(aTHX_ "Can't do seteuid!\n");
3098 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3099 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3102 else if (PL_preprocess)
3103 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3104 else if (fdscript >= 0)
3105 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3107 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3109 /* We absolutely must clear out any saved ids here, so we */
3110 /* exec the real perl, substituting fd script for scriptname. */
3111 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3112 PerlIO_rewind(PL_rsfp);
3113 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3114 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3115 if (!PL_origargv[which])
3116 Perl_croak(aTHX_ "Permission denied");
3117 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3118 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3119 #if defined(HAS_FCNTL) && defined(F_SETFD)
3120 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3122 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3123 (int)PERL_REVISION, (int)PERL_VERSION,
3124 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3125 Perl_croak(aTHX_ "Can't do setuid\n");
3126 #endif /* IAMSUID */
3128 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3129 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3130 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3131 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3133 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3136 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3137 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3138 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3139 /* not set-id, must be wrapped */
3145 S_find_beginning(pTHX)
3147 register char *s, *s2;
3148 #ifdef MACOS_TRADITIONAL
3152 /* skip forward in input to the real script? */
3155 #ifdef MACOS_TRADITIONAL
3156 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3158 while (PL_doextract || gMacPerl_AlwaysExtract) {
3159 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3160 if (!gMacPerl_AlwaysExtract)
3161 Perl_croak(aTHX_ "No Perl script found in input\n");
3163 if (PL_doextract) /* require explicit override ? */
3164 if (!OverrideExtract(PL_origfilename))
3165 Perl_croak(aTHX_ "User aborted script\n");
3167 PL_doextract = FALSE;
3169 /* Pater peccavi, file does not have #! */
3170 PerlIO_rewind(PL_rsfp);
3175 while (PL_doextract) {
3176 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3177 Perl_croak(aTHX_ "No Perl script found in input\n");
3180 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3181 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3182 PL_doextract = FALSE;
3183 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3185 while (*s == ' ' || *s == '\t') s++;
3187 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3188 if (strnEQ(s2-4,"perl",4))
3190 while ((s = moreswitches(s)))
3193 #ifdef MACOS_TRADITIONAL
3194 /* We are always searching for the #!perl line in MacPerl,
3195 * so if we find it, still keep the line count correct
3196 * by counting lines we already skipped over
3198 for (; maclines > 0 ; maclines--)
3199 PerlIO_ungetc(PL_rsfp, '\n');
3203 /* gMacPerl_AlwaysExtract is false in MPW tool */
3204 } else if (gMacPerl_AlwaysExtract) {
3215 PL_uid = PerlProc_getuid();
3216 PL_euid = PerlProc_geteuid();
3217 PL_gid = PerlProc_getgid();
3218 PL_egid = PerlProc_getegid();
3220 PL_uid |= PL_gid << 16;
3221 PL_euid |= PL_egid << 16;
3223 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3227 S_forbid_setid(pTHX_ char *s)
3229 if (PL_euid != PL_uid)
3230 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3231 if (PL_egid != PL_gid)
3232 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3236 Perl_init_debugger(pTHX)
3238 HV *ostash = PL_curstash;
3240 PL_curstash = PL_debstash;
3241 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3242 AvREAL_off(PL_dbargs);
3243 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3244 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3245 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3246 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3247 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3248 sv_setiv(PL_DBsingle, 0);
3249 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3250 sv_setiv(PL_DBtrace, 0);
3251 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3252 sv_setiv(PL_DBsignal, 0);
3253 PL_curstash = ostash;
3256 #ifndef STRESS_REALLOC
3257 #define REASONABLE(size) (size)
3259 #define REASONABLE(size) (1) /* unreasonable */
3263 Perl_init_stacks(pTHX)
3265 /* start with 128-item stack and 8K cxstack */
3266 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3267 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3268 PL_curstackinfo->si_type = PERLSI_MAIN;
3269 PL_curstack = PL_curstackinfo->si_stack;
3270 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3272 PL_stack_base = AvARRAY(PL_curstack);
3273 PL_stack_sp = PL_stack_base;
3274 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3276 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3279 PL_tmps_max = REASONABLE(128);
3281 New(54,PL_markstack,REASONABLE(32),I32);
3282 PL_markstack_ptr = PL_markstack;
3283 PL_markstack_max = PL_markstack + REASONABLE(32);
3287 New(54,PL_scopestack,REASONABLE(32),I32);
3288 PL_scopestack_ix = 0;
3289 PL_scopestack_max = REASONABLE(32);
3291 New(54,PL_savestack,REASONABLE(128),ANY);
3292 PL_savestack_ix = 0;
3293 PL_savestack_max = REASONABLE(128);
3295 New(54,PL_retstack,REASONABLE(16),OP*);
3297 PL_retstack_max = REASONABLE(16);
3305 while (PL_curstackinfo->si_next)
3306 PL_curstackinfo = PL_curstackinfo->si_next;
3307 while (PL_curstackinfo) {
3308 PERL_SI *p = PL_curstackinfo->si_prev;
3309 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3310 Safefree(PL_curstackinfo->si_cxstack);
3311 Safefree(PL_curstackinfo);
3312 PL_curstackinfo = p;
3314 Safefree(PL_tmps_stack);
3315 Safefree(PL_markstack);
3316 Safefree(PL_scopestack);
3317 Safefree(PL_savestack);
3318 Safefree(PL_retstack);
3327 lex_start(PL_linestr);
3329 PL_subname = newSVpvn("main",4);
3333 S_init_predump_symbols(pTHX)
3338 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3339 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3340 GvMULTI_on(PL_stdingv);
3341 io = GvIOp(PL_stdingv);
3342 IoTYPE(io) = IoTYPE_RDONLY;
3343 IoIFP(io) = PerlIO_stdin();
3344 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3346 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3348 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3351 IoTYPE(io) = IoTYPE_WRONLY;
3352 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3354 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3356 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3358 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3359 GvMULTI_on(PL_stderrgv);
3360 io = GvIOp(PL_stderrgv);
3361 IoTYPE(io) = IoTYPE_WRONLY;
3362 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3363 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3365 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3367 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3370 Safefree(PL_osname);
3371 PL_osname = savepv(OSNAME);
3375 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3378 argc--,argv++; /* skip name of script */
3379 if (PL_doswitches) {
3380 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3383 if (argv[0][1] == '-' && !argv[0][2]) {
3387 if ((s = strchr(argv[0], '='))) {
3389 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3392 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3395 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3396 GvMULTI_on(PL_argvgv);
3397 (void)gv_AVadd(PL_argvgv);
3398 av_clear(GvAVn(PL_argvgv));
3399 for (; argc > 0; argc--,argv++) {
3400 SV *sv = newSVpv(argv[0],0);
3401 av_push(GvAVn(PL_argvgv),sv);
3403 (void)sv_utf8_decode(sv);
3408 #ifdef HAS_PROCSELFEXE
3409 /* This is a function so that we don't hold on to MAXPATHLEN
3410 bytes of stack longer than necessary
3413 S_procself_val(pTHX_ SV *sv, char *arg0)
3415 char buf[MAXPATHLEN];
3416 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3418 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3419 includes a spurious NUL which will cause $^X to fail in system
3420 or backticks (this will prevent extensions from being built and
3421 many tests from working). readlink is not meant to add a NUL.
3422 Normal readlink works fine.
3424 if (len > 0 && buf[len-1] == '\0') {
3428 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3429 returning the text "unknown" from the readlink rather than the path
3430 to the executable (or returning an error from the readlink). Any valid
3431 path has a '/' in it somewhere, so use that to validate the result.
3432 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3434 if (len > 0 && memchr(buf, '/', len)) {
3435 sv_setpvn(sv,buf,len);
3441 #endif /* HAS_PROCSELFEXE */
3444 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3450 PL_toptarget = NEWSV(0,0);
3451 sv_upgrade(PL_toptarget, SVt_PVFM);
3452 sv_setpvn(PL_toptarget, "", 0);
3453 PL_bodytarget = NEWSV(0,0);
3454 sv_upgrade(PL_bodytarget, SVt_PVFM);
3455 sv_setpvn(PL_bodytarget, "", 0);
3456 PL_formtarget = PL_bodytarget;
3460 init_argv_symbols(argc,argv);
3462 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3463 #ifdef MACOS_TRADITIONAL
3464 /* $0 is not majick on a Mac */
3465 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3467 sv_setpv(GvSV(tmpgv),PL_origfilename);
3468 magicname("0", "0", 1);
3471 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3472 #ifdef HAS_PROCSELFEXE
3473 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3476 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3478 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3482 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3484 GvMULTI_on(PL_envgv);
3485 hv = GvHVn(PL_envgv);
3486 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3487 #ifdef USE_ENVIRON_ARRAY
3488 /* Note that if the supplied env parameter is actually a copy
3489 of the global environ then it may now point to free'd memory
3490 if the environment has been modified since. To avoid this
3491 problem we treat env==NULL as meaning 'use the default'
3496 # ifdef USE_ITHREADS
3497 && PL_curinterp == aTHX
3501 environ[0] = Nullch;
3504 for (; *env; env++) {
3505 if (!(s = strchr(*env,'=')))
3512 sv = newSVpv(s+1, 0);
3513 (void)hv_store(hv, *env, s - *env, sv, 0);
3517 #endif /* USE_ENVIRON_ARRAY */
3520 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3521 SvREADONLY_off(GvSV(tmpgv));
3522 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3523 SvREADONLY_on(GvSV(tmpgv));
3525 #ifdef THREADS_HAVE_PIDS
3526 PL_ppid = (IV)getppid();
3529 /* touch @F array to prevent spurious warnings 20020415 MJD */
3531 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3533 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3534 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3535 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3539 S_init_perllib(pTHX)
3544 s = PerlEnv_getenv("PERL5LIB");
3546 incpush(s, TRUE, TRUE, TRUE);
3548 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3550 /* Treat PERL5?LIB as a possible search list logical name -- the
3551 * "natural" VMS idiom for a Unix path string. We allow each
3552 * element to be a set of |-separated directories for compatibility.
3556 if (my_trnlnm("PERL5LIB",buf,0))
3557 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3559 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3563 /* Use the ~-expanded versions of APPLLIB (undocumented),
3564 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3567 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3571 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3573 #ifdef MACOS_TRADITIONAL
3576 SV * privdir = NEWSV(55, 0);
3577 char * macperl = PerlEnv_getenv("MACPERL");
3582 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3583 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3584 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3585 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3586 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3587 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3589 SvREFCNT_dec(privdir);
3592 incpush(":", FALSE, FALSE, TRUE);
3595 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3598 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3600 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3604 /* sitearch is always relative to sitelib on Windows for
3605 * DLL-based path intuition to work correctly */
3606 # if !defined(WIN32)
3607 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3613 /* this picks up sitearch as well */
3614 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3616 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3620 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3621 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3624 #ifdef PERL_VENDORARCH_EXP
3625 /* vendorarch is always relative to vendorlib on Windows for
3626 * DLL-based path intuition to work correctly */
3627 # if !defined(WIN32)
3628 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3632 #ifdef PERL_VENDORLIB_EXP
3634 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3636 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3640 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3641 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3644 #ifdef PERL_OTHERLIBDIRS
3645 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3649 incpush(".", FALSE, FALSE, TRUE);
3650 #endif /* MACOS_TRADITIONAL */
3653 #if defined(DOSISH) || defined(EPOC)
3654 # define PERLLIB_SEP ';'
3657 # define PERLLIB_SEP '|'
3659 # if defined(MACOS_TRADITIONAL)
3660 # define PERLLIB_SEP ','
3662 # define PERLLIB_SEP ':'
3666 #ifndef PERLLIB_MANGLE
3667 # define PERLLIB_MANGLE(s,n) (s)
3671 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3673 SV *subdir = Nullsv;
3678 if (addsubdirs || addoldvers) {
3679 subdir = sv_newmortal();
3682 /* Break at all separators */
3684 SV *libdir = NEWSV(55,0);
3687 /* skip any consecutive separators */
3689 while ( *p == PERLLIB_SEP ) {
3690 /* Uncomment the next line for PATH semantics */
3691 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3696 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3697 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3702 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3703 p = Nullch; /* break out */
3705 #ifdef MACOS_TRADITIONAL
3706 if (!strchr(SvPVX(libdir), ':')) {
3709 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3711 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3712 sv_catpv(libdir, ":");
3716 * BEFORE pushing libdir onto @INC we may first push version- and
3717 * archname-specific sub-directories.
3719 if (addsubdirs || addoldvers) {
3720 #ifdef PERL_INC_VERSION_LIST
3721 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3722 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3723 const char **incver;
3730 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3732 while (unix[len-1] == '/') len--; /* Cosmetic */
3733 sv_usepvn(libdir,unix,len);
3736 PerlIO_printf(Perl_error_log,
3737 "Failed to unixify @INC element \"%s\"\n",
3741 #ifdef MACOS_TRADITIONAL
3742 #define PERL_AV_SUFFIX_FMT ""
3743 #define PERL_ARCH_FMT "%s:"
3744 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3746 #define PERL_AV_SUFFIX_FMT "/"
3747 #define PERL_ARCH_FMT "/%s"
3748 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3750 /* .../version/archname if -d .../version/archname */
3751 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3753 (int)PERL_REVISION, (int)PERL_VERSION,
3754 (int)PERL_SUBVERSION, ARCHNAME);
3755 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3756 S_ISDIR(tmpstatbuf.st_mode))
3757 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3759 /* .../version if -d .../version */
3760 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3761 (int)PERL_REVISION, (int)PERL_VERSION,
3762 (int)PERL_SUBVERSION);
3763 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3764 S_ISDIR(tmpstatbuf.st_mode))
3765 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3767 /* .../archname if -d .../archname */
3768 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3769 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3770 S_ISDIR(tmpstatbuf.st_mode))
3771 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3774 #ifdef PERL_INC_VERSION_LIST
3776 for (incver = incverlist; *incver; incver++) {
3777 /* .../xxx if -d .../xxx */
3778 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3779 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3780 S_ISDIR(tmpstatbuf.st_mode))
3781 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3787 /* finally push this lib directory on the end of @INC */
3788 av_push(GvAVn(PL_incgv), libdir);
3792 #ifdef USE_5005THREADS
3793 STATIC struct perl_thread *
3794 S_init_main_thread(pTHX)
3796 #if !defined(PERL_IMPLICIT_CONTEXT)
3797 struct perl_thread *thr;
3801 Newz(53, thr, 1, struct perl_thread);
3802 PL_curcop = &PL_compiling;
3803 thr->interp = PERL_GET_INTERP;
3804 thr->cvcache = newHV();
3805 thr->threadsv = newAV();
3806 /* thr->threadsvp is set when find_threadsv is called */
3807 thr->specific = newAV();
3808 thr->flags = THRf_R_JOINABLE;
3809 MUTEX_INIT(&thr->mutex);
3810 /* Handcraft thrsv similarly to mess_sv */
3811 New(53, PL_thrsv, 1, SV);
3812 Newz(53, xpv, 1, XPV);
3813 SvFLAGS(PL_thrsv) = SVt_PV;
3814 SvANY(PL_thrsv) = (void*)xpv;
3815 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3816 SvPVX(PL_thrsv) = (char*)thr;
3817 SvCUR_set(PL_thrsv, sizeof(thr));
3818 SvLEN_set(PL_thrsv, sizeof(thr));
3819 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3820 thr->oursv = PL_thrsv;
3821 PL_chopset = " \n-";
3824 MUTEX_LOCK(&PL_threads_mutex);
3830 MUTEX_UNLOCK(&PL_threads_mutex);
3832 #ifdef HAVE_THREAD_INTERN
3833 Perl_init_thread_intern(thr);
3836 #ifdef SET_THREAD_SELF
3837 SET_THREAD_SELF(thr);
3839 thr->self = pthread_self();
3840 #endif /* SET_THREAD_SELF */
3844 * These must come after the thread self setting
3845 * because sv_setpvn does SvTAINT and the taint
3846 * fields thread selfness being set.
3848 PL_toptarget = NEWSV(0,0);
3849 sv_upgrade(PL_toptarget, SVt_PVFM);
3850 sv_setpvn(PL_toptarget, "", 0);
3851 PL_bodytarget = NEWSV(0,0);
3852 sv_upgrade(PL_bodytarget, SVt_PVFM);
3853 sv_setpvn(PL_bodytarget, "", 0);
3854 PL_formtarget = PL_bodytarget;
3855 thr->errsv = newSVpvn("", 0);
3856 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3859 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3860 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3861 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3862 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3863 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3864 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3866 PL_reginterp_cnt = 0;
3870 #endif /* USE_5005THREADS */
3873 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3876 line_t oldline = CopLINE(PL_curcop);
3882 while (AvFILL(paramList) >= 0) {
3883 cv = (CV*)av_shift(paramList);
3885 if (paramList == PL_beginav) {
3886 /* save PL_beginav for compiler */
3887 if (! PL_beginav_save)
3888 PL_beginav_save = newAV();
3889 av_push(PL_beginav_save, (SV*)cv);
3891 else if (paramList == PL_checkav) {
3892 /* save PL_checkav for compiler */
3893 if (! PL_checkav_save)
3894 PL_checkav_save = newAV();
3895 av_push(PL_checkav_save, (SV*)cv);
3900 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3901 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3907 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3911 (void)SvPV(atsv, len);
3913 PL_curcop = &PL_compiling;
3914 CopLINE_set(PL_curcop, oldline);
3915 if (paramList == PL_beginav)
3916 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3918 Perl_sv_catpvf(aTHX_ atsv,
3919 "%s failed--call queue aborted",
3920 paramList == PL_checkav ? "CHECK"
3921 : paramList == PL_initav ? "INIT"
3923 while (PL_scopestack_ix > oldscope)
3926 Perl_croak(aTHX_ "%"SVf"", atsv);
3933 /* my_exit() was called */
3934 while (PL_scopestack_ix > oldscope)
3937 PL_curstash = PL_defstash;
3938 PL_curcop = &PL_compiling;
3939 CopLINE_set(PL_curcop, oldline);
3941 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3942 if (paramList == PL_beginav)
3943 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3945 Perl_croak(aTHX_ "%s failed--call queue aborted",
3946 paramList == PL_checkav ? "CHECK"
3947 : paramList == PL_initav ? "INIT"
3954 PL_curcop = &PL_compiling;
3955 CopLINE_set(PL_curcop, oldline);
3958 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3966 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3968 S_vcall_list_body(pTHX_ va_list args)
3970 CV *cv = va_arg(args, CV*);
3971 return call_list_body(cv);
3976 S_call_list_body(pTHX_ CV *cv)
3978 PUSHMARK(PL_stack_sp);
3979 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3984 Perl_my_exit(pTHX_ U32 status)
3986 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3987 thr, (unsigned long) status));
3996 STATUS_NATIVE_SET(status);
4003 Perl_my_failure_exit(pTHX)
4006 if (vaxc$errno & 1) {
4007 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4008 STATUS_NATIVE_SET(44);
4011 if (!vaxc$errno && errno) /* unlikely */
4012 STATUS_NATIVE_SET(44);
4014 STATUS_NATIVE_SET(vaxc$errno);
4019 STATUS_POSIX_SET(errno);
4021 exitstatus = STATUS_POSIX >> 8;
4022 if (exitstatus & 255)
4023 STATUS_POSIX_SET(exitstatus);
4025 STATUS_POSIX_SET(255);
4032 S_my_exit_jump(pTHX)
4034 register PERL_CONTEXT *cx;
4039 SvREFCNT_dec(PL_e_script);
4040 PL_e_script = Nullsv;
4043 POPSTACK_TO(PL_mainstack);
4044 if (cxstack_ix >= 0) {
4047 POPBLOCK(cx,PL_curpm);
4055 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4058 p = SvPVX(PL_e_script);
4059 nl = strchr(p, '\n');
4060 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4062 filter_del(read_e_script);
4065 sv_catpvn(buf_sv, p, nl-p);
4066 sv_chop(PL_e_script, nl);